Merlin Bird Graphic

Merlin Bird ID

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Recently Viewed Species

    Brown Booby Identification

    Adult Description

    • Large, dark waterbird.
    • Long body, long neck, long tail.
    • Narrow, pointed wings.
    • Brown head, throat, chest, and upperparts.
    • White belly, vent, and wing linings

    Immature Description

    Juvenile is brown overall; belly ranges from mottled brown and white to mostly dark. Sharp line still visible between darker chest and lighter belly. Underwing coverts are pale. Bare parts generally dull gray.
    Relative Size

    Relative Sizegoose or largergoose-sized or larger
    Measurements
    • Both Sexes
      • Length: 25.2-33.5 in (64-85 cm)
      • Weight: 33.5-63.5 oz (950-1800 g)
      • Wingspan: 52.0-61.0 in (132-155 cm)